SOCHI, Russia -- Russian security officials are hunting down three potential female suicide bombers, one of whom is believed to be in Sochi, where the Winter Olympics will begin next month. Marcedes Lewis Jersey . Police leaflets seen by an Associated Press reporter at a central Sochi hotel on Tuesday contain warnings about three potential suicide bombers. A police letter said that one of them, Ruzanna Ibragimova, a 22-year-old widow of an Islamic militant, was at large in Sochi. A U.S. congressman who was in Sochi on Tuesday to assess the situation said he was impressed by the work of Russian security forces but troubled that potential suicide bombers had gotten into the city, despite all of the extraordinary security measures. "We know some of them got through the perimeter," Rep. Michael McCaul, chairman of the U.S. House Homeland Security Committee, told The Associated Press. "Shes for real. What we dont know is how many more black widows are out there." Russian authorities have blamed the so-called "black widows" of slain insurgents for previous suicide attacks in the country. The Black Sea resort town will host the games amid concerns about security and potential terrorist attacks. The southern city of Volgograd was rocked by two suicide bombings in late December, which killed 34 and injured scores more. An Islamic militant group in Dagestan posted a video on Sunday claiming responsibility for the bombings and threatened to strike the games in Sochi, about 500 kilometres (300 miles) west of Dagestan. McCaul, a Republican from Texas, said he had numerous meetings with officials in Moscow and Sochi, and was briefed by the joint operation centre in Sochi, which is responsible for overall security in the area. "The one improvement I would ask of the Russians is to allow our intelligence services to co-ordinate and co-operate better with theirs," McCaul said. Although the Russian side was confident that it could provide security, the U.S. has information that could help keep the games safe, he said. The congressman also expressed concern that terrorists could have gotten into Sochi before security was tightened. "How many potential cells could be in Sochi and the Olympic village?" he said. "But after the ring of steel was implemented we have this one person who seems to have been able to penetrate it. It does demonstrate vulnerability." Police material distributed to the hotel staff included pictures of two other women in veils: 26-year-old Zaira Aliyeva and 34-year-old Dzhannet Tsakhayeva. It said they had been trained "to perpetrate acts of terrorism." It warned that the two women "are probably among us," but, unlike Ibragimovas case, did not say if they are in Sochi. No further information was provided about the two women or their motivation. The term "black widow" refers to the belief that women who have carried out past suicide attacks in Russia did so to avenge the deaths of husbands or other male relatives. Security officials in Sochi were not available for comment on Tuesday. The Olympics are to be held Feb. 7-23. Russia has mounted an intense security operation in the city, but concern persists that "soft targets" outside the Olympic venues, such as buses and tourist facilities, are vulnerable to attack. Russian troops also have been active fighting militants in Dagestan, one of the predominantly Muslim republics in Russias North Caucasus and the centre of an Islamic insurgency that has engulfed the region. On Tuesday, troops shot dead the leader of a militant group, Interior Ministry spokeswoman Fatina Ubaidatova said. She said the militant, Eldar Magatov, was wanted in attacks on security forces, bombings and the extortion of businessmen. Interior Ministry troops elsewhere in Dagestan defused an explosive device placed near a village administration building and engaged in a firefight with militants holed up in a house, the spokeswoman said. Chad Henne Jersey . Colorado came up big against Chicago last spring, and repeated that performance Tuesday night. Varlamov stopped 36 shots and Paul Stastny had a goal and an assist for the Avalanche in a 5-1 victory over the Blackhawks. Cam Robinson Jersey . Tony Parker had 33 points and nine assists and San Antonio never trailed in a resounding 116-92 victory over Portland, bullying the younger Trail Blazers in Game 1 of the Western Conference semifinals. http://www.shopthejaguarsonline.com/Elite-Blake-Bortles-Jaguars-Jersey/ . Burkes Flames are one of several teams involved in heavy trade speculation going into next Wednesdays 3pm et deadline, with the most prominent name in play being forward Michael Cammalleri.ZAGREB, Croatia -- Marin Cilic from Croatia overcame problems with his serve to win the Zagreb Indoors tournament on Sunday, defeating top-seeded Tommy Haas from Germany 6-3, 6-4. Fifth-seeded Cilic gained his fourth title in Zagreb and became the third Croat overall to win at least 10 career titles. Cilic also lifted his career record in Zagreb to 22-4, winning 20 of his last 21 matches at the event. Cilic -- champion here in 2009, 10 and last year -- struggled with his first serve in the opening set but played some great returns with a solid baseline performance. The 35-year-old Haas broke in the first game but then lost five out of the next six. Haas also wasted a break point forr a 4-2 lead in the second set, allowing Cilic to step up the pressure and gain a 5-3 lead. A.J. Bouye Jersey. Haas saved a match point, but Cilic made sure he used the second opportunity. "Its nice to be in the finals after the tough last year I had," Cilic said. "I played (under) great pressure." Haas in turn said Marin "played big points better." Cilics coach Goran Ivanisevic has 22 titles and Ivan Ljubicic has 10. Cilic and Haas are tied 2-2 in head-to-heads. Making the Zagreb final was Haas best performance this year, after he lost in the opening rounds in Auckland and at the Australian Open. Haas won his last title in Vienna last year. Cheap NFL JerseysWholesale JerseysWholesale NFL JerseysJerseys From ChinaWholesale NFL JerseysCheap NFL JerseysCheap Jerseys ' ' '